package java1;

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
        while (in.hasNextInt()) {
            int a = in.nextInt();
            int b = in.nextInt();
            if(a>1000) System.out.println("a<=1000");
            else System.out.println(a + b);
        }

	}
}